diff options
Diffstat (limited to 'drivers/ntb')
| -rw-r--r-- | drivers/ntb/hw/idt/ntb_hw_idt.c | 27 |
1 files changed, 12 insertions, 15 deletions
diff --git a/drivers/ntb/hw/idt/ntb_hw_idt.c b/drivers/ntb/hw/idt/ntb_hw_idt.c index 0cd79f367f7c..24040317bb9c 100644 --- a/drivers/ntb/hw/idt/ntb_hw_idt.c +++ b/drivers/ntb/hw/idt/ntb_hw_idt.c @@ -1744,20 +1744,19 @@ static int idt_ntb_msg_clear_mask(struct ntb_dev *ntb, u64 mask_bits) * idt_ntb_msg_read() - read message register with specified index * (NTB API callback) * @ntb: NTB device context. - * @midx: Message register index * @pidx: OUT - Port index of peer device a message retrieved from - * @msg: OUT - Data + * @midx: Message register index * * Read data from the specified message register and source register. * - * Return: zero on success, negative error if invalid argument passed. + * Return: inbound message register value. */ -static int idt_ntb_msg_read(struct ntb_dev *ntb, int midx, int *pidx, u32 *msg) +static u32 idt_ntb_msg_read(struct ntb_dev *ntb, int *pidx, int midx) { struct idt_ntb_dev *ndev = to_ndev_ntb(ntb); if (midx < 0 || IDT_MSG_CNT <= midx) - return -EINVAL; + return ~(u32)0; /* Retrieve source port index of the message */ if (pidx != NULL) { @@ -1772,18 +1771,15 @@ static int idt_ntb_msg_read(struct ntb_dev *ntb, int midx, int *pidx, u32 *msg) } /* Retrieve data of the corresponding message register */ - if (msg != NULL) - *msg = idt_nt_read(ndev, ntdata_tbl.msgs[midx].in); - - return 0; + return idt_nt_read(ndev, ntdata_tbl.msgs[midx].in); } /* - * idt_ntb_msg_write() - write data to the specified message register - * (NTB API callback) + * idt_ntb_peer_msg_write() - write data to the specified message register + * (NTB API callback) * @ntb: NTB device context. - * @midx: Message register index * @pidx: Port index of peer device a message being sent to + * @midx: Message register index * @msg: Data to send * * Just try to send data to a peer. Message status register should be @@ -1791,7 +1787,8 @@ static int idt_ntb_msg_read(struct ntb_dev *ntb, int midx, int *pidx, u32 *msg) * * Return: zero on success, negative error if invalid argument passed. */ -static int idt_ntb_msg_write(struct ntb_dev *ntb, int midx, int pidx, u32 msg) +static int idt_ntb_peer_msg_write(struct ntb_dev *ntb, int pidx, int midx, + u32 msg) { struct idt_ntb_dev *ndev = to_ndev_ntb(ntb); unsigned long irqflags; @@ -2058,7 +2055,7 @@ static const struct ntb_dev_ops idt_ntb_ops = { .msg_set_mask = idt_ntb_msg_set_mask, .msg_clear_mask = idt_ntb_msg_clear_mask, .msg_read = idt_ntb_msg_read, - .msg_write = idt_ntb_msg_write + .peer_msg_write = idt_ntb_peer_msg_write }; /* @@ -2269,7 +2266,7 @@ static ssize_t idt_dbgfs_info_read(struct file *filp, char __user *ubuf, "Message data:\n"); for (idx = 0; idx < IDT_MSG_CNT; idx++) { int src; - (void)idt_ntb_msg_read(&ndev->ntb, idx, &src, &data); + data = idt_ntb_msg_read(&ndev->ntb, &src, idx); off += scnprintf(strbuf + off, size - off, "\t%hhu. 0x%08x from peer %hhu (Port %hhu)\n", idx, data, src, ndev->peers[src].port); |
